Oil pressure gauge

[cob427sc]

I have the FFR set of 6 gauges that came with a coupe kit. The oil pressure gauge is installed in another car I am building and has started acting irregularly. The gauge goes directly to 100 pounds when started even though it previously worked fine, and stays pinned at 100. I installed an additional mechanical gauge and it shows what I believe is the correct pressure readings for the engine. My question is where do I start to find the problem? Is there a way to test either the sending unit or the gauge itself? Thanks for any suggestions.

[Dgc333]

Sounds like the sender has gone bad. If you disconnect the sender the gauge should go back to zero. If it doesn't either the gauge is bad or you have a short in the wiring from the gauge to the sender. Disconnecting the sensor wire at the gauge will tell you which.

[cob427sc]

Thanks. I'll try that. Anyone know who makes these gauges as there is no name on the gauges or on the box they came in.

[UpNorth]

Thanks. I'll try that. Anyone know who makes these gauges as there is no name on the gauges or on the box they came in.

Try https://speedhut.com/

It could be them but I’m not 100% certain.